Nervous Tissue Flashcards
What 2 systems make up the nervous system?
Central nervous system and peripheral nervous system
What makes up the central nervous system?
Brain and spinal cord
What makes up the peripheral nervous system?
Cranial nerves and spinal nerves
What system receives sensation regarding the condition of the body as well as the outside environment?
Sensory nervous system
What system delivers signals to the muscles and glands in the body so they can perform some type of action?
Motor nervous system
What system receives and processes sensory info we are generally aware of (touch, pain, vision, hearing, taste, smell)?
Somatic sensory system
What system receives and processes sensory info we aren’t generally aware of (oxygen and co2 in the blood, amount of metabolic waste products in our blood, core body temperature, where food is in our digestive tract, composition of food we eat)?
Visceral sensory system
What system delivers nerve impulses to skeletal muscle (which we generally activate involuntarily)?
Somatic motor system
What system delivers nerve impulses to cardiac muscle, smooth muscle, and the glands of the body?
Visceral (autonomic) motor system
-basic structural unit of nervous system
have a high metabolic rate and depend on a constant supply of glucose and oxygen
-have extreme longevity
-can change but cannot divide
Neuron
What does the cell body of the unipolar neurons do?
Control center; retrieves, integrates, and sends nerve impulses
What does the peripheral process of the unipolar neurons do?
Carry sensory info from skin to cell body
What does the dendrites of the unipolar neurons do?
Detect touch, pain, temperature, and vibration from skin
What does the central process of the unipolar neurons do?
Send impulses from the cell body to central nervous system
What does the short single process of the unipolar neurons do?
Connects central and peripheral process to cell body